diff options
| -rw-r--r-- | lib/Sema/SemaChecking.cpp | 7 | ||||
| -rw-r--r-- | test/Sema/memset-invalid.c | 6 |
2 files changed, 12 insertions, 1 deletions
diff --git a/lib/Sema/SemaChecking.cpp b/lib/Sema/SemaChecking.cpp index 7ee0eac370..f616a10524 100644 --- a/lib/Sema/SemaChecking.cpp +++ b/lib/Sema/SemaChecking.cpp @@ -1804,7 +1804,12 @@ void Sema::CheckFormatString(const StringLiteral *FExpr, /// /// \param Call The call expression to diagnose. void Sema::CheckMemsetArguments(const CallExpr *Call) { - assert(Call->getNumArgs() == 3 && "Unexpected number of arguments to memset"); + // It is possible to have a non-standard definition of memset. Validate + // we have the proper number of arguments, and if not, abort further + // checking. + if (Call->getNumArgs() != 3) + return; + const Expr *Dest = Call->getArg(0)->IgnoreParenImpCasts(); QualType DestTy = Dest->getType(); diff --git a/test/Sema/memset-invalid.c b/test/Sema/memset-invalid.c new file mode 100644 index 0000000000..c763858e26 --- /dev/null +++ b/test/Sema/memset-invalid.c @@ -0,0 +1,6 @@ +// RUN: %clang_cc1 -fsyntax-only %s -verify + +char memset(); // expected-warning {{incompatible redeclaration of library function 'memset'}} expected-note{{'memset' is a builtin with type}} +char test() { + return memset(); +} |